Reflective Computer Screens Vs. Anti-Glare Computer Screens

Many newer computer screens utilize technology to reduce reflected light, or glare. Anti-glare technology represents a departure from previous generations of computer display screens.

History

• The first computer display screens were glass CRT (cathode ray tube) displays. Since these display screens were coated with a metallic powder on the inside surface, these display screens would reflect light from outside sources, such as overhead lighting, sunlight, or any other light source in the same room as the CRT display.

Considerations

• Because glare and reflected light can cause discomfort while using a computer display screen, new technologies have been developed to reduce glare and reflection.

  Using an anti-glare filter or anti-glare computer display screen will typically reduce visual discomfort caused by reflected light or glare. It will also reduce the symptoms of Computer Vision Syndrome (CVS). Some of these symptoms are neck and shoulder pain, headaches, blurred vision, dry eyes and eyestrain.

Types of Anti-Glare Screens

• Anti-glare filters come in three designs: flat, wrap-around and stick-on. The appropriate filter for your computer display screen depends on the type of display screen (LCD or CRT) and whether it is a standalone computer display screen, or if it is integrated into the computer (such as the LCD display of a laptop computer).

  Most newer LCD computer displays also have an anti-glare coating pre-installed on the screen. This can be in the form of a matte finish, or in the form of a pre-installed stick-on anti-glare filter.

Disadvantages to a Reflective Screen

• Since computer use requires special visual skills, reflection and glare can cause visual distortion and discomfort. According to American Optometric Association, "Sitting at a computer generally causes a person to look straight ahead for long
  stretches, work in a dry office or home environment, and to blink less often. These factors can lead to vision problems. Additionally, computer use requires specific vision skills, which add further demands to the visual system and contribute to eye and vision discomfort."

  While it appears that computers themselves have no known harmful effects on eyesight, computer users often complain of eyestrain, headaches, and difficulty focusing when their computer display screen reflects light or causes glare.

Benefits

• There is no evidence that a reflective computer display screen will have harmful effects on eyesight; however, an anti-glare monitor filter or anti-glare computer display screen will typically be more comfortable to use. An anti-glare display screen will also alleviate some of the symptoms of Computer Vision Syndrome.